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Chapter 1: Problem 137
Will help you prepare for the material covered in the next section. Is \(-1\) a solution of \(3-2 x \leq 11 ?\)
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Explain how to solve \(x^{2}+6 x+8=0\) using factoring and the zero-product principle.
Determine whether each statement makes sense or does not make sense, and explain your reasoning. Because I want to solve \(25 x^{2}-169=0\) fairly quickly, I'll use the quadratic formula.
Write a quadratic equation in general form whose solution set is \(\\{-3,5\\}\).
In a round-robin chess tournament, each player is paired with every other player once. The formula $$ N=\frac{x^{2}-x}{2} $$ models the number of chess games, \(N,\) that must be played in a round-robin tournament with \(x\) chess players. Use this formula to solve. In a round-robin chess tournament, 36 games were played. How many players were entered in the tournament?
In Exercises 122鈥�133, use the strategy for solving word problems, modeling the verbal conditions of the problem with a linear inequality. Parts for an automobile repair cost 175 dollar. The mechanic charges 34 dollar per hour. If you receive an estimate for at least 226 dollar and at most 294 dollar for fixing the car, what is the time interval that the mechanic will be working on the job?
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